Billy Mauch
Penrod
Robert J. Mauch
Danny
Dick Purcell
Tex Boyden
Gene Lockhart
Mr. Schofield
Kathleen Lockhart
Mrs. Schofield
Hugh O'Connell
Professor Caligostro
Charles Halton
Mr. Bitts
Bernice Pilot
Delia
Jackie Morrow
Rodney Bitts
Philip Hurlic
Verman
Carole Landis
Girl at Fair (uncredited)
Sonny Bupp
Monk (uncredited)
Glen Cavender
Truck Driver Giving Penrod a Lift (uncredited)
James Conaty
Dinner Guest (uncredited)
Jack Cunningham
Jack (uncredited)
Gloria Fisher
Amy Perkins (uncredited)
Jack A. Goodrich
Attendant (uncredited)
Eddie Graham
Second Reporter (uncredited)
John Harron
Spieler at Carnival (uncredited)
Peter Lind Hayes
Weight Guesser (uncredited)
Stuart Holmes
Banker Dinner Guest (uncredited)
Don Hulbert
Chuck (uncredited)
Phyllis Hurst
(uncredited)
Frank Jaquet
Sheriff Bart (uncredited)
Muriel Kearney
(uncredited)
Ethan Laidlaw
Bus Driver (uncredited)
Billy Lechner
Donald (uncredited)
Al Lloyd
Sheriff's Deputy / Jailer (uncredited)
Roger McGee
Roger (uncredited)
Edmund Mortimer
Dinner Guest (uncredited)
Jack Mower
Matt (uncredited)
Spec O'Donnell
Carnival Patron (uncredited)
Paul Panzer
Mexican Rancher Giving Penrod a Lift (uncredited)
Johnnie Pirrone Jr.
Sam (uncredited)
John J. Richardson
Man Warning Matt That the Balloon Was Up (uncredited)
Cliff Saum
Police Officer Kicking the Professor (uncredited)
Jerry Tucker
Jerry (uncredited)
Meredith White
Scarlett Washington (uncredited)
Lottie Williams
Woman Watching Reporter Interview (uncredited)
Tom Wilson
Brill (uncredited)
Jack Wise
First Reporter (uncredited)
Billy Wolfstone
Piggy (uncredited)
Lillian Yarbo
Mrs. Washington (uncredited)